CN211965786U - Vertical finish forging die with deep blind holes for double-coupling-gear blank - Google Patents

Abstract

The utility model discloses a vertical final forging die for a double-coupling gear blank with a deep blind hole, which comprises an upper convex module, a lower concave module, an ejector mechanism, an upper punch, a left half-die and a right half-die, The outer sides of the left and right halves are equipped with opening and closing cylinders, which can be opened and closed under the action of the opening and closing cylinders. The upper convex module, the upper punch, the left half mould, the right half mould and the lower concave module can be jointly enclosed. Final forging model cavity, the final forging model cavity includes a deep blind hole, the upper large gear position cavity, the lower pinion position cavity and the bottom cylinder with a draft angle, and the lower pinion position cavity is facing the left , the interface between the right half mold and the lower concave module; an elastic locking device is also installed below the upper mold plate, and the elastic locking device includes a locking sleeve, a sliding rod and a compression spring. As an important part of the vertical forging process of the double-coupling gear blank, the final forging die provides a guarantee for realizing the vertical forging, reducing the process and saving the material cost and machining cost.

Description

A Vertical Final Forging Die for Double Coupling Gear Blanks with Deep Blind Holes

technical field

The utility model relates to the technical field of forging dies, in particular to a final forging die used in the forging process of a double-coupling tooth blank with a deep blind hole.

Background technique

As shown in Figure 4, the traditional manufacturing method of double coupling gear with deep blind hole is to use horizontal forging first, but horizontal forging cannot forge deep blind holes, only double coupling gear blank with full core can be forged. After the forging is completed, the deep blind hole is completed by machining. In addition, horizontal forging also requires trimming, which increases the cost of a set of trimming dies, resulting in a long process flow, high material costs, and high subsequent machining costs.

Utility model content

The utility model aims to provide a final forging die used in the vertical forging process of a double-coupling gear blank, which is used for final forging of the blank after collecting and pre-forging, as one of the complete set of forging dies. The important process provides a guarantee for the realization of vertical forging, while reducing the process, saving material costs and machining costs.

To this end, the technical scheme adopted by the present invention is: a vertical final forging die with a double-coupling gear blank with a deep blind hole, comprising an upper convex module fixedly installed under the upper template, and fixedly installed above the lower template The lower concave module, and the ejecting mechanism vertically extending into the bottom of the cavity of the lower concave module, the upper punch is installed in the middle of the upper convex module, and the left half-die and the right half-die are arranged above the lower concave module , the outer sides of the left and right half molds are respectively equipped with opening and closing cylinders, which can be opened and closed under the action of the opening and closing cylinders. The final forging model cavity is jointly enclosed, and the final forging model cavity includes a deep blind hole, a large gear position cavity at the upper part, a pinion gear position cavity at the lower part, and a cylindrical shape with a draft angle at the bottom, and the pinion gear at the lower part is cylindrical. The position cavity is facing the interface between the left and right half-moulds and the lower concave module; an elastic locking device is also installed below the upper template, and the elastic locking device includes a locking sleeve, a sliding rod and a compression spring. The upper end of the sliding rod is fixed on the upper template, and the compression spring and the locking sleeve are slidably sleeved up and down on the sliding rod;

When the left and right halves are closed, and the upper die plate drives the upper convex module, the upper punch and the elastic locking device down to the effective working stroke of the final forging die, the inner cone surface of the locking sleeve can meet the outer cone surfaces of the left and right halves. Complete contact, thus locking the left and right half molds; when the upper mold plate continues to descend, the compression spring is continued to be compressed, while the locking sleeve remains stationary, the locking force increases, the upper convex module and the upper punch continue to descend, and the upper punch The head goes deep into the final forging mold cavity and fills the lower pinion position cavity of the blank with material, and the upper convex module and the upper punch continue to descend until the upper convex module contacts the left and right half-dies, and the final forging of the blank is completed.

As a preference of the above solution, the upper convex module adopts an inner and outer split structure, including an upper punch body and an upper punch outer shell, and the bottom surface of the upper punch outer shell is higher than the bottom surface of the upper punch body. The main body of the punch is inserted between the left and right half moulds, and the bottom surface of the upper punch casing is in contact with the top surfaces of the left and right half moulds. The replacement frequency of the upper punch body is higher than that of the upper punch casing, and the split structure is adopted to reduce the use cost; generation of edges.

It is further preferred that the upper punch and the main body of the upper punch both have upper end heads, and the upper end heads are sequentially assembled from the inside to the outside and then inserted into the upper punch positioning seat, and the upper punch outer die is pressed against the upper punch. The stepped surface of the main body is locked on the upper punch positioning seat by screws, and the upper punch positioning seat is locked on the upper template by screws, so as to realize the installation of the upper convex module on the upper template; the lower concave module With a lower end head, the lower end head is inserted into the lower die positioning seat, the lower die positioning seat is inserted into the lower template, the lower module pressing ring is pressed on the step surface of the lower concave module, and is locked on the lower template by screws, so as to Realize the installation of the concave module on the lower template. The upper convex module adopts a split structure, which does not need to open holes on the upper punch body, which improves the strength of the upper punch body. The module pressing ring is installed and fixed on the lower template in combination with screws, avoiding opening holes on the concave module, ensuring the strength of the lower module itself, and at the same time realizing the replacement of different molds on the lower module, with good versatility and convenient and fast installation. Solid and reliable.

Further preferably, a lower cushion block is arranged between the lower die positioning seat and the lower template. Since the lower module is the main load-bearing component in the forging process, the strength requirements are high, and the spacer block is added, and the spacer block is replaced during the use process, and the lower template does not need to be replaced, which further improves the service life of the lower template.

Further preferably, the ejector mechanism adopts a split structure, including a lower ejector block and an ejector rod, the lower end of the lower ejector block is provided with an anti-fall off protrusion, and the upper end of the ejector rod abuts on the anti-fall off protrusion. The stroke range of the anti-falling protrusion is between the concave module and the lower spacer. The ejector rod is a commonly used part in the press. It adopts a split structure, which is equivalent to only adding a lower ejector block to the existing press, so as to achieve universal use.

Further preferably, at least two groups of guide mechanisms are arranged between the upper template and the lower template, and each group of guide mechanisms is composed of a guide sleeve and a guide column.

Further preferably, the elastic locking device further comprises a locking sleeve positioning plate and a sliding sleeve, the locking sleeve positioning plate is fixedly sleeved outside the locking sleeve, and the locking sleeve positioning plate is slidably installed on the sliding rod through the sliding sleeve. And through the nut locking and anti-fall, the sliding installation of the locking sleeve on the sliding rod is realized.

Further preferably, the front end of the opening and closing cylinder is connected with the corresponding left and right half-moulds through the connecting block, the rear end of the opening and closing cylinder is fixed on the column of the "L"-shaped cylinder mounting seat, and the bottom plate of the cylinder mounting seat passes through. The cylinder positioning seat is installed on the lower template.

The beneficial effects of the utility model are as follows: the upper convex module, the upper punch, the left half-die, the right half-die and the lower concave module can be used together to form a final forging model cavity, and the final forging model cavity includes a deep blind hole and a large gear position on the upper part. The cavity, the lower pinion position cavity and the bottom cylindrical shape with a draft angle, and the lower pinion position cavity is facing the interface between the left and right half molds and the concave module, which can ensure that the final forging is formed. A blank with two gear positions and a deep blind hole, which can also ensure smooth demoulding, is an important part of the vertical forging process of double-shaft gears with deep blind holes. The final forging die is applied to the vertical forging of the double-coupling gear blank with the deep blind hole, which improves the quality of the forging, reduces the process, and saves the material cost and the machining cost.

Description of drawings

Figure 1 is a schematic structural diagram of the utility model.

FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1 .

Fig. 3 is the schematic diagram of the final forging forming of the utility model.

Figure 4 is a schematic structural diagram of a double-coupling gear with a deep blind hole after machining.

Figure 5 is a process flow diagram of vertical forging of a double coupling tooth blank with a deep blind hole.

Detailed ways

Below by embodiment and in conjunction with accompanying drawing, the utility model is further described:

As shown in Figure 1 and Figure 2, a vertical final forging die for a double coupling gear blank with a deep blind hole is mainly composed of an upper die plate 1, an upper convex module 2, a lower die plate 3, a lower concave module 4, and a lower die. Female die positioning seat 5, upper punch positioning seat 6, lower module pressing ring 7, cylinder positioning seat 8, lower ejector block 9, ejector rod 10, lower cushion block 11, guide sleeve 12, guide column 13, upper punch Head 14, cylinder mounting seat 15, left half mold 16, right half mold 17, opening and closing cylinder 18, sliding rod 19, compression spring 20, locking sleeve positioning plate 21, sliding sleeve 22, connecting block 23, locking sleeve 24 composition.

The upper convex module 2 is fixedly installed below the upper formwork 1 , and the lower concave module 4 is fixedly installed above the lower formwork 3 . The ejector mechanism can vertically extend into the bottom of the cavity of the concave module 4 to eject the formed blank. An upper punch 14 is installed in the middle of the upper protruding module 2 .

A left half-mould 16 and a right half-mould 17 are arranged above the lower concave module 4 . The outer sides of the left half mold 16 and the right half mold 17 are respectively equipped with opening and closing cylinders 18 .

The upper convex module 2, the upper punch 14, the left half-die 16, the right half-die 17 and the lower concave module 4 can together form a final forging mold cavity. The final forging cavity is used to form the final forging blank. The final forging cavity includes a deep blind hole, an upper large gear position cavity, a lower pinion position cavity and a bottom cylinder with a draft angle, and the lower The pinion position cavity is facing the interface between the left half-mold 16, the right half-mold 17 and the concave module 4, to ensure that after the left half-mold 16 and the right half-mold 17 are separated, the blank can be smoothly removed under the action of the ejector mechanism. mold.

An elastic locking device is also installed below the upper template 1 , and the elastic locking device is mainly composed of a locking sleeve 24 , a sliding rod 19 and a compression spring 20 . The upper end of the sliding rod 19 is fixed on the upper template 1 , and the compression spring 20 and the locking sleeve 24 are slidably sleeved on the sliding rod 19 up and down.

When the left half-die 16 and the right half-die 17 are closed, and the upper die plate 1 drives the upper convex module 2, the upper punch 14 and the elastic locking device to descend to the effective working stroke h1 of the final forging die, the inner conical surface of the locking sleeve 24 can meet the The outer cone surfaces of the left half-mold 16 and the right half-mold 17 completely contact, thereby locking the left half-mold 16 and the right half-mold 17 to prevent the left half-mold 16 and the right half-mold 17 from being separated. When the upper die plate 1 continues to descend, the compression spring 20 is continuously compressed, while the locking sleeve 24 remains stationary, the locking force increases, the upper convex module 2 and the upper punch 14 continue to descend, and the upper punch 14 penetrates into the final forging mold cavity The lower pinion position cavity of the blank is filled with material, and the upper convex module 2 and the upper punch 14 continue to descend until the upper convex module 2 is in contact with the left half-die 16 and the right half-die 17, and the final forging of the blank is completed. .

Preferably, the upper convex module 2 adopts an inner and outer split structure, including an upper punch main body 2a and an upper punch outer shell 2b. The punch body 2a is inserted between the left half mould 16 and the right half mould 17 , and the bottom surface of the upper punch casing 2b contacts the top surfaces of the left half mould 16 and the right half mould 17 . Of course, the upward protruding module 2 may also adopt an integrated structure.

In order to facilitate the installation, the upper punch 14 and the upper punch body 2a both have upper end heads, which are assembled together from the inside to the outside through the upper end heads and then inserted into the upper punch positioning seat 6, and the upper punch jacket 2b is pressed against the upper punch. The stepped surface of the punch main body 2a is locked on the upper punch positioning seat 6 by screws; the upper punch positioning seat 6 is locked on the upper template 1 by screws, so that the upper convex module 2 is on the upper template 1. installation.

The lower concave module 4 has a lower end, the lower end is inserted into the lower die positioning seat 5, the lower die positioning seat 5 is inserted into the lower template 3, and the lower module pressing ring 7 is pressed on the stepped surface of the lower concave module 4, and It is locked on the lower template 3 by screws, so as to realize the installation of the concave module 4 on the lower template 3 .

Preferably, a lower cushion block 11 is arranged between the lower die positioning seat 5 and the lower template 3 .

The ejector mechanism preferably adopts a split structure, which is composed of a lower ejector block 9 and an ejector rod 10 . The lower end of the lower top block 9 is provided with an anti-dropping protrusion 9a, the upper end of the ejector rod 10 is pressed against the anti-dropping protrusion 9a, and the stroke range of the anti-dropping protrusion 9a is between the lower concave module 4 and the lower cushion block 11. . The stroke of the ejector mechanism is determined by the stroke range h of the anti-separation protrusion 9a.

There are at least two sets of guide mechanisms, preferably four sets, between the upper template 1 and the lower template 3 . Each group of guide mechanisms is composed of a guide sleeve 12 and a guide column 13, which guide the up and down movement of the upper template 1 and the upper convex module 2.

Preferably, the elastic locking device further comprises a locking sleeve positioning plate 21 and a sliding sleeve 22, the locking sleeve positioning plate 21 is fixedly sleeved outside the locking sleeve 24, and the locking sleeve positioning plate 21 is slidably installed on the sliding sleeve through the sliding sleeve 22. The rod 19 is locked and prevented from falling off by a nut, so that the sliding installation of the locking sleeve 24 on the sliding rod 19 is realized.

The front end of the opening and closing cylinder 18 is connected with the corresponding left and right half molds 16 and 17 through the connecting block 23, and the rear end of the opening and closing cylinder 18 is fixed on the column of the "L"-shaped cylinder mounting seat 15. The bottom plate is mounted on the lower template 3 through the cylinder positioning seat 8 .

The blank formed by this final forging die is shown in Figure 3. As shown in Fig. 5, the vertical forging method is adopted, and the double-coupling tooth blanks with deep blind holes can be directly forged through blanking, heating to the forging temperature, aggregate, pre-forging, and final forging forming processes. The final forging process is as follows: the left and right two open and close cylinders 18 move to the center of the mold at the same time, so that the left half mold 16 and the right half mold 17 are closed to form a complete lower mold cavity with the fixed concave module 4, and the pre-forging After the process is completed, the blank is loaded into the lower mold cavity, and the upper sliding block of the press drives the upper template 1, the upper convex module 2, the upper punch 14 and the elastic locking device of the final forging die to go down to the effective working stroke of the mold. The inner conical surface of the sleeve 24 is in complete contact with the outer conical surfaces of the left half-mold 16 and the right half-mold 17, and the left and right half-molds are locked so that they remain in a closed state after being stressed. The slider of the press continues to descend, at this time the compression spring 20 continues to be compressed, the locking sleeve 24 remains stationary, the locking force increases, the upper convex module 2 and the upper punch 14 continue to descend, and the upper punch 14 begins to contact the blank , and go deep into the blank, so that the cavity at the lower pinion position of the blank is filled with material, and the upper convex module 2 and the upper punch 14 continue to descend until the lower plane of the upper punch casing 2b is in contact with the left half mold 16 and the right half. The upper plane of the die 17 is in contact, and the final forging is completed at this time; the upper slider of the press drives the upper die plate 1, the upper convex module 2, the upper punch 14 and the elastic locking device of the final forging die to go up to the effective working stroke of the die At this time, the inner conical surface of the locking sleeve 24 begins to separate from the outer conical surfaces of the left half-die 16 and the right half-die 17, and the slider continues to drive the upper die plate 1, the upper convex module 2, the upper punch 14 and the elastic locking device to return upward. At the initial position, the left and right opening and closing cylinders 18 move back to the left and right directions, so that the left half-die 16 and the right half-die 17 are separated, the ejector mechanism moves upward to eject the blank, and manually clamps the blank to complete a final forging cycle.

Claims (8)

1. The utility model provides a take vertical finish forging die of double coupling tooth blank of dark blind hole, includes last convex mould piece (2) of fixed mounting in cope match-plate pattern (1) below, fixed mounting is in lower bolster (3) top sunken module (4) to and the vertical liftout mechanism that stretches into sunken module (4) die cavity bottom, the mid-mounting of last convex mould piece (2) has last drift (14), its characterized in that: a left half die (16) and a right half die (17) are arranged above the lower concave die (4), the outer sides of the left half die (16) and the right half die (17) are respectively provided with an opening and closing cylinder (18) and can be opened and closed under the action of the opening and closing cylinder (18), the upper convex die (2), the upper punch (14), the left half die (16), the right half die (17) and the lower concave die (4) can jointly enclose a finish forging die cavity, the finish forging die cavity comprises a deep blind hole, a large gear position cavity at the upper part, a small gear position cavity at the lower part and a cylinder with a drawing draft at the bottom, and the small gear position cavity at the lower part is over against the interface of the left half die (16) and the right half die (17) and the lower concave; an elastic locking device is further mounted below the upper template (1), the elastic locking device comprises a locking sleeve (24), a sliding rod (19) and a compression spring (20), the upper end of the sliding rod (19) is fixed on the upper template (1), and the compression spring (20) and the locking sleeve (24) are vertically sleeved on the sliding rod (19) in a sliding manner;

when the left half die (16) and the right half die (17) are closed, the upper template (1) drives the upper convex die block (2), the upper punch (14) and the elastic locking device to move downwards to the effective working stroke of the finish forging die, and the inner conical surface of the locking sleeve (24) can be completely contacted with the outer conical surfaces of the left half die (16) and the right half die (17), so that the left half die (16) and the right half die (17) are locked; when the upper die plate (1) continues to descend, the compression spring (20) continues to be compressed, the locking sleeve (24) is kept still, the locking force is increased, the upper convex die block (2) and the upper punch (14) continue to descend, the upper punch (14) penetrates into a finish forging die cavity and enables a pinion position cavity at the lower part of the blank to be filled with materials, the upper convex die block (2) and the upper punch (14) continue to descend again until the upper convex die block (2) is in contact with the left half die (16) and the right half die (17), and the blank is finished in finish forging forming.

2. The vertical finish forging die for the double-coupling tooth blank with the deep blind hole as claimed in claim 1, wherein: the upper convex module (2) adopts an internal and external split structure and comprises an upper convex module main body (2a) and an upper convex module outer sleeve (2b), the bottom surface of the upper convex module outer sleeve (2b) is higher than that of the upper convex module main body (2a), when the upper convex module main body (2a) is inserted between the left half mold and the right half mold (16 and 17), and the bottom surface of the upper convex module outer sleeve (2b) is contacted with the top surfaces of the left half mold and the right half mold (16 and 17).

3. The vertical finish forging die for the double-coupling tooth blank with the deep blind hole as claimed in claim 2, wherein: the upper punch head (14) and the upper male die main body (2a) are respectively provided with an upper end head, the upper end heads are sequentially sleeved together from inside to outside through the upper end heads and then inserted into the upper male die positioning seat (6), the upper male die outer sleeve (2b) is pressed on the step surface of the upper male die main body (2a) and locked on the upper male die positioning seat (6) through screws, and the upper male die positioning seat (6) is locked on the upper template (1) through screws, so that the upper male die block (2) is installed on the upper template (1); the lower concave module (4) is provided with a lower end head, the lower end head is inserted into the lower concave module positioning seat (5), the lower concave module positioning seat (5) is inserted into the lower template (3), and the lower module pressing ring (7) is pressed on the step surface of the lower concave module (4) and locked on the lower template (3) through a screw, so that the lower concave module (4) is installed on the lower template (3).

4. The vertical finish forging die for the double-coupling tooth blank with the deep blind hole as claimed in claim 3, wherein: and a lower cushion block (11) is arranged between the lower concave die positioning seat (5) and the lower template (3).

5. The vertical finish forging die for the double-coupling tooth blank with the deep blind hole as claimed in claim 1, wherein: the liftout mechanism adopts split type structure, including kicking block (9) and liftout pole (10) down, the lower extreme of kicking block (9) has anticreep arch (9a) down, and the upper end of liftout pole (10) is supported on anticreep arch (9a), the stroke scope of anticreep arch (9a) is between recessed module (4) and lower cushion (11).

6. The vertical finish forging die for the double-coupling tooth blank with the deep blind hole as claimed in claim 1, wherein: at least two groups of guide mechanisms are arranged between the upper template (1) and the lower template (3), and each group of guide mechanisms consists of a guide sleeve (12) and a guide column (13).

7. The vertical finish forging die for the double-coupling tooth blank with the deep blind hole as claimed in claim 1, wherein: the elastic locking device further comprises a locking sleeve positioning plate (21) and a sliding sleeve (22), the locking sleeve positioning plate (21) is fixedly sleeved outside the locking sleeve (24), and the locking sleeve positioning plate (21) is slidably mounted on the sliding rod (19) through the sliding sleeve (22) and is locked and prevented from falling through a nut, so that the sliding mounting of the locking sleeve (24) on the sliding rod (19) is realized.

8. The vertical finish forging die for the double-coupling tooth blank with the deep blind hole as claimed in claim 1, wherein: the front end of the opening and closing air cylinder (18) is connected with the corresponding left and right half dies (16 and 17) through a connecting block (23), the rear end of the opening and closing air cylinder (18) is fixed on an upright post of an L-shaped air cylinder mounting seat (15), and a bottom plate of the air cylinder mounting seat (15) is installed on the lower template (3) through an air cylinder positioning seat (8).

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